/*-
 * <<
 * UAVStack
 * ==
 * Copyright (C) 2016 - 2017 UAVStack
 * ==
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * >>
 */

package com.creditease.uav.collect.client.copylogagent;

import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;

public class EventBuilder {

    /**
     * Instantiate an Event instance based on the provided body and headers. If <code>headers</code> is
     * <code>null</code>, then it is ignored.
     * 
     * @param body
     * @param headers
     * @return
     */
    public static Event withBody(byte[] body, Map<String, String> headers) {

        Event event = new SimpleEvent();

        if (body == null) {
            body = new byte[0];
        }
        event.setBody(body);

        event.setBodyLength(body.length);

        if (headers != null) {
            event.setHeaders(new HashMap<String, String>(headers));
        }

        return event;
    }

    public static Event withBody(byte[] body) {

        return withBody(body, null);
    }

    public static Event withBody(String body, Charset charset, Map<String, String> headers) {

        return withBody(body.getBytes(charset), headers);
    }

    public static Event withBody(String body, Charset charset) {

        return withBody(body, charset, null);
    }
}
